Churn-dasher



(No Model.)

R. S. BRIDGMAN.

- GHURN DASHER. No. 252,995. Patented'Jan. 31.18 82.

WITNESSES I INVENTOR L/v j W: fled ATTORNEYS.

N were Photo-Likbognphun Walhinglon. n. c,

UNITED STATES PATENT OFFICE.

ROBERT S. BRIDGMAN, OF CHARLESTON, ARKANSAS.

CHURN-DASHER.

SPECIFICATION forming Figure 1 is an elevation of improved dasher,

and Fig. 2 is a plan of the upper disk.

My invention relates to improvements in churn-dashers; and it consistsin the peculiar construction and arrangement of the parts, ashereinafter more fully set forth.

In the accompanying drawings, (t represents a dasher-shaft formed inthree or more sections, detaehably connected together byscrewfaste'uings, to which, near its lower end, are journaled theparallel horizontal, circular dashers b b, which are free to revolve onthe dasher-shaft and are detaehably connected therewith, so that thedashers may be removed from the dasher-shaft for cleaning or otherpurposes, when desired, and replaced. The dasher b is formed by firstdrawing a series of radial lines, a, from near the center of the dasherto near its circumference, at equal distances apart. At the outerextremity of each radial line a a chord, 0, is drawn at right angles tothe radial line, and each blade hot the dasher thus formed has one edgebent upwardly and its opposite edge bent downwardly, so that in thedownward movement of the dasher in the milk it will be revolved in onedirection, and in the' upward movementof the dasher it will be revolvedin an opposite direction. The lower dasher, I), is of the sameconstruction as the dasher b, excepting that the bends in the radialedges of-the blades are reversed or bent in an opposite direction. By

part of Letters Patent No. 252,995, dated January 31, 1882.

Application filed November 3, 1881. (No model.)

this construction, in the reciprocating movement of the dasher-shaft thedashers revolve in opposite directions, stirring the milk violently,with counter-currents from top to bottom.

0 represents two or more stop-catches, or a circular ratchet-plate,secured to the upper face of the dasher 1) near its center.

d represents a pawl, pivoted to the dashershaft near the dasher I), andadapted toengage with the teeth of the ratchet. In the downwardmovementof the dasher b the pawl will ride over the ratchet-teeth, whilein the vupward movement of the dasher the pawl will engage with one ofthe ratchet-teeth and prevent the dasher b from revolving in its upwardmovement. The ratchet and pawl are to be used in gathering the butterafter the milk has been churned sufficiently. By the employment of theratchet and pawl the dasher is free to revolve in its downward movement,but its rotary motion is stopped at once in its upward movement. Thepawl must be turned up out of the way when the dasher is used inchurning, to allow the free action of the dashers, and is onlyturneddown when the milk is churned and it is desired to gather the butter.

I claim as my invention- The combination, with the dasher-shaft a,provided withthe pawl 01, pivoted thereto, of the dasher b, journaled onthe shaft and construeted as set forth, and provided with theratchet-plate 0, whereby, when the pawl is raised, the dasher will berevolved in the reciprocations of its shaft, and when the pawl islowered the dasher will be locked in its upward movement to gather thebutter, substair tially as described.

ROBERT SHARPE BRIDGMAN.

Witnesses CHARLES KNoBLn, SAM. YONGER.

